Alright, so here's the most simple but fun game I came across recently: Tenzies. I was drawn to it because it was just a container with 40 6-sided dice, 4 different colors, 10 dice each. To play, you take your 10 dice and you roll 'em as fast as you can 'til all the dice are the same number, holding the ones you wanna keep. First one to do it wins.

@robert Oh yeah, very loud and hectic! And there are tons of different little versions that you can play like stacking the dice when they get to your number, or getting 5 of one number and 5 of another, and a bunch of other versions. Surprisingly fun for such a simple idea.